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Do the newer antifreezes need a different hygrometer than the ethylene glycol types?

 

If not, has anyone ever seen a hygrometer 'go bad'?

 

I have one that's a bit old, has a swinging needle indicator vs. a series of balls, and I can't tell if I got screwed on a coolant service or if the tester is reading wrong.

 

 

Dave

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An ethylene glycol (EG) antifreeze hydrometers don't read correctly if at all on newer propylene glycol (PG) antifreeze. Best bet may be to pick up a new one. Also you may want to look into coolant test strips to test the ph if you are checking if its bad.

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